chemistry

Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.150 M HClO(aq) with 0.150 M KOH(aq). The ionization constant for HClO is 4.0x10^-8.

pH before the addition of any KOH?
pH after the addition of 25 mL of KOH?

Please show the steps to solving this problem.

asked by Francesca
  1. HClO + KOH ==> KClO + H2O

    At the beginning you have pure HClO.
    .......HClO ==> H^+ + ClO^-
    I.....0.150......0......0
    C........-x......x......x
    E...0.150-x......x......x

    Substitute the E line into the Ka expression and solve for x = H^+ and convert to pH.

    After reaction:
    HClO + KOH ==> KClO + H2O

    mols HClO initially = M x L = ?
    mols KOH added = M x L = ?
    How much of the HClO is used? how much is left?
    How much of the KOH has been used? How much is left.
    You have prepared a buffer solution at this point and the pH can be determined by using te Henderson-Hasselbalch equation. Substitute and solve for pH. Post your work if you get stuck.

    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    11.During an acid-base titration, 25 mL of NaOH 0.2 M were required to neutralize 20 mL of HCl. Calculate the pH of the solution for each of the following: 12.Before the titration. 13.After adding 24.9 mL of NaOH. 14.At the
  2. Chemistry

    Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.240 M HClO(aq) with 0.240 M KOH(aq). The ionization constant for HClO can be found here.
  3. chemistry

    Consider the titration of 20.00 ML of KOH 0.01 mol/L with HNO3 0.01 mol/L. Calculate the PH of the titration solution after the addition of the following titration volumes: A. 0.00 ml C. 20.00 ml B. 19.99 ml D. 25.00 ml
  4. chem

    Consider the titration of 20 mL of .105M Butric Acid HBut, with .125M sodium Hydroxide? calculate the pH before titration calculate the volume of added base to reach the end point calculate the pH halfway to the equivalence point
  5. Titration Graph?

    Use a spreadsheet to prepare a family of graphs for the titration of 50.0 mL of 0.020 M H2A with 0.100 M NaOH. Consider the following cases: (a) pK1 = 4.00, pK2 = 8.00; (b) pK1 = 4.00, pK2 = 6.00; (c) pK1 = 4.00, pK2 = 5.00.
  6. Chemistry

    Calculate the pH values and draw the titration curve for the titration of 500 mL of 0.010 M acetic acid (pKa 4.76) with 0.010 MKOH. Calculate the pH of the solution after 490 mL of the titrant have been added.
  7. Chemistry

    During an acid-base titration, 25 mL of NaOH 0.2 M were required to neutralize 20 mL of HCl. Calculate the pH of the solution for each: a) Before titration b) After adding 24.9 mL of NaOH c) At equivalence pt d) After adding 25. 1
  8. chemistry

    Hello. In the class, we did the experiment to calculate the value of Kc for the following reaction: CH3COOH+CH3CH2OH ÌCH3COOCH2CH3+H2O we measured the mass for 5 cm^3 of all 5 compound above: CH3COOH 5.236 g CH3CH2OH 4.021 g
  9. Chemistry- titration

    OK I REALLY NEED HELP!!! and i AM DESEPRATE!! I have a titration courswork tomorow and i need to know the measurment,procedual and significant errors that are made in titration and how they can be improved. Also i need help with
  10. Chemistry

    Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq).HClO is a weak acid with a Ka of 4.0× 10–8. It reacts with strong base to produce ClO–. (e) after addition
  11. science

    Calculate the pH at 0, 10, 90, 100 & 110% titration for the titration of 50.0ml of 0.1M HCl with 0.10M NaOH?

More Similar Questions